CN106572660A - Microbiocides and uses thereof - Google Patents

Microbiocides and uses thereof Download PDF

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Publication number
CN106572660A
CN106572660A CN201580041566.1A CN201580041566A CN106572660A CN 106572660 A CN106572660 A CN 106572660A CN 201580041566 A CN201580041566 A CN 201580041566A CN 106572660 A CN106572660 A CN 106572660A
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compositionss
polymer
biocide
microbicide
mmdtc
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CN106572660B (en
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T.S.萨姆罗尔
T.E.麦克尼尔
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Graceful Laboratory International Corp Of Bark
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
    • A01N47/12—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
    • A01N47/14—Di-thio analogues thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/03—Specific additives for general use in well-drilling compositions
    • C09K8/035—Organic additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/605—Compositions for stimulating production by acting on the underground formation containing biocides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/607—Compositions for stimulating production by acting on the underground formation specially adapted for clay formations
    • C09K8/608—Polymer compositions
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/32—Anticorrosion additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Toxicology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

The compositions and methods for control of microbial growth, for example, in oil and gas field fluids. The present invention also relates to microbicides, and more particularly, to the use of biocides in gas and oil field fluids.

Description

Microbicide and application thereof
Cross-Reference to Related Applications
This application claims the priority of the Provisional U.S. Patent Application 62/032,095 in the submission on the 1st of August in 2014.Should Provisional application is incorporated by by quoting with it.
Background of invention
Invention field：
The present invention relates to be used to control the compositionss and method of the growth of microorganism in such as oil field compositionss.The present invention is also It is related to microbicide, and (such as in drill-well operation, increases in gas field and oil field well fluids more particularly, to Biocide Produce the fluid (such as output water and recirculation water) used in operation, and/or rear volume increase activity) in purposes.
Description of Related Art：
From oil field, production oil is related to several stages.Most of in these stages may be subject to undesired microbial activitiess Impact.Additionally, in other industries, it is understood that there may be the problem of microorganism pollution.Exist to undesirable for controlling these The lasting needs of the improved method and composition of microorganism.
After Jiang Jing is pierced comprising oil, the subsurface geological structure of natural gas and water, carry out all effort so that oil and/or The production of gas is maximized.In order to increase oil and/or gas to the permeability and mobility on surface, drilling well is generally set to undergo well volume increase Measure.
Well well stimulation is typically referred to for cleaning well, expanding passage and increase the interstitial space in interval to be implanted If technique after dry hole, so that fluid can be easier to move in stratum.
Typical well handling process generally includes that the fluid of special through engineering approaches is pumped into into underground ground with high pressure and two-forty During quality structure is made.High-pressure fluid is (typically with the water of some special antifriction fluid additives, to reduce pumping pressure and maximize Rock fracture) exceed rock strength and produce pressure break in the earth formation, this can extend up to hundreds of feet in geological structure.Certain A little conventional frac treatments generally include carrier fluid (usually water or saline) and polymer, and the polymer also commonly referred to as subtracts Rub agent.Many well stimulation fluids will further comprise proppant.Other compositionss as fracturing fluid are included with additive Water, viscoelastic surfactant gels, thickened oil, cross-linking agent, oxygen scavenger etc..
Well treatment fluid can by by polymer mix with aqueous solution (sometimes oil base or heterogeneous fluid are preferable) come Prepare；Generally, polymer is soluble polysaccharide.The purpose of polymer contributes to forming the fracturing fluid of pressure break typically to reducing Turbulent skn friction power；And for abundant thickened aqueous solutions so that the solid particle of proppant can suspend in the solution with defeated In being sent to pressure break.
These polymer being used in well fluids undergo the environment for being conducive to bacterial growth and oxidative degradation.Antibacterial is at this Growth on polymer used in class fluid can substantially change the physical characteristics of these fluids.For example, bacterial action can With degradation polymer, cause viscosity loss and subsequent fluid ineffectivity, and importantly, cause the blocking of pressure break (due to biofilm development) and the subsequently reduction of the recovery of required hydro carbons.Being particularly vulnerable to the fluid of bacterial degradation impact includes containing There are polysaccharide and/or synthetic polymer to flow such as polyacrylamide, poly- glucosan (polyglycosan), carboxyalkyl ether etc. Body.In addition to bacterial degradation, these polymer are easy to oxidative degradation in the presence of free oxygen.Degraded can directly by dissociating Oxygen causes or is mediated by aerobe.Thus, for example, it is known that polyacrylamide is degraded into less in the presence of free oxygen Molecule fragment.Because of that, just continually microbicide and oxygen scavenger be added in well treatment fluid thin to control respectively Bacteria growing and oxygen are degraded.It is desirable that selecting that there is minimum interaction or without phase with any component in well stimulation fluid The microbicide of interaction.
For example, microbicide should not affect fluid viscosity and should not affect to be included in fluid with any significant degree Oxygen scavenger performance, the oxygen scavenger is typically derived from bisulfites.However, the viscosity for reducing can be by addition in addition Polymer and/or cross-linking agent overcoming.Such case is more more preferable than increased viscosity.
Other desirable properties of microbicide are (a) cost benefits, such as every liter cost, per square for processing Meter Cheng Ben and annual cost；B () safety, such as personnel risk assessment (such as toxic gas or body are contacted), neutralization are wanted Ask, register, to environmental emission and persistency；The compatibility of (c) and system fluid, such as dissolubility, partition coefficient, pH, sulfur Change presence, the level of total dissolved solidss of presence, temperature, hardness, metal ion or the sulfate of hydrogen；(d) with other at physics and chemistry The compatibility of product such as corrosion inhibitor, scale preventative, demulsifier, water scavengine agent, well volume increase chemicals and polymer；And E () processes the separation of corrosivity for example to metal and elastomer, freezing point, heat stability and component.
Current well stimulation fluid generally adopts glutaraldehyde or tetrakis hydroxymetyl phosphonium sulfuric (THPS) or 2,2- bis- bromo- 3- time The Biocide of nitrilo propionic acid amide. (DBNPA) or other snap actions is controlling germ contamination.
Common industrial practice is the Biocide by adding the quick killing of effective dose, and subsequent controlled sequence addition is another A kind of Biocide of relatively slow effect is controlling growth of microorganism.The example of the quick Biocide killed includes alkane two Aldehyde, such as lower alkane dialdehyde, such as C1-C8Alkane dialdehyde, such as malonaldehyde, butanedial, glutaraldehyde, hexandial.Preferably DBNPA and pentane dialdehyde (glutaraldehyde).
Using the quick Biocide (such as glutaraldehyde) killed, within several minutes, a few hours or a couple of days, by relatively The Biocide of slow effect come reduce or microbiostatic activity be also produce it is well known in the art.For example, the B1 of EP 0337624 The method for teaching control oil field biofouling, methods described is including addition effective dose selected from one or more alkane dialdehyde (such as C3-C7Alkane dialdehyde) quick killing Biocide, and and then by controlled sequence add add effective dose it is different Thiazolone (it is used as the Biocide of relatively slow effect).
Glutaraldehyde (pentane dialdehyde) may be problematic in use because it to process it is harmful and with environment in terms of Worry.Additionally, it has been reported that at elevated temperatures glutaraldehyde may deleteriously affect the fluid of well treatment fluid to glue in document Degree；The elevated temperature is generally observed during use in well treatment fluid.Due to maintaining higher fluid viscosity, under Backflow may be hindered to jewel hole, this is possibly debatable in pressure break application.Additionally, glutaraldehyde has shown that negatively affect The performance of oxygen scavenger.
With regard to THPS, although verified its shows property more more preferable than glutaraldehyde in terms of the interaction with oxygen scavenger Can, it has been found that, when adding pre-inversion and during rear conversion, THPS is with interpolymer interaction and limits the development of viscosity. That is, it has been observed that THPS with interpolymer interaction and significantly reduces fluid viscosity during shearing.
Therefore, there is still a need for the more general microbicide used in such as oil well and gas well, described to kill micro- life Agent can efficiently control germ contamination and have minimum interaction with polymer and/or oxygen scavenger.The present invention is full Foot these need and other needs.
Summary of the invention
According to the present invention, there is provided following compositionss, including the microbicide of (a) effective microbe amount of suppression, this is killed Microorganism agent is selected from the group, and the group is made up of the following：(i) monomethyl dithiocarbamate (MMDTC), (ii) diformazan Base dithiocarbamate (DMDTC), the salt of (iii) MMDTC or DMDTC and (iv) its mixture and combination, and (b) can Optional geopolymer.
According to the present invention, additionally provide for (such as oil well or gas well fluid in for injection well (such as producing well) In compositionss) method that suppresses germ contamination, the method includes the microbicide of addition (a) effectively bacteriostatic amount, and this is killed Microorganism agent is selected from the group, and the group is made up of the following：(i) monomethyl dithiocarbamate (MMDTC), (ii) diformazan Base dithiocarbamate (DMDTC), the salt of (iii) MMDTC or DMDTC and (iv) its mixture and combination, and (b) Optionally polymer, the polymer is selected from the following group, and the group is made up of the following：Galactomannan polymer, spread out Biochemical galactomannan polymer, starch, xanthan gum, oxidized cellulose, hydroxy alkyl cellulose, poly- glucosan, carboxyalkyl The copolymer of ether, polyvinyl alcohol polymer, vinyl alcohol and vinyl acetate and the polymer as polymeric reaction product, this gathers Compound includes one or more monomer being selected from the group, and the group is made up of the following：Vinyl pyrrolidone, 2- acrylamides Base -2- methyl propane sulfonic acids, acrylic acid, methacrylic acid, styrene sulfonic acid, acrylamide and its for well treatment polymer His monomer.
Other targets of the present invention, feature and advantage will be made apparent from from described further below.
Accompanying drawing is described in detail
Refer to the attached drawing can be more fully understood by the present invention.Accompanying drawing is intended to illustrate the example feature of the present invention, rather than limit Make its scope.
Fig. 1 is the block diagram for illustrating the solution viscosity with Biocide type and concentration change.
Fig. 2 is the block diagram for illustrating the viscosity of polyacrylamide and biocide blend before and after heating.
Fig. 3 is the block diagram for illustrating Biocide to the effect of oxygen scavenger.
Fig. 4 is the figure of the antifriction test result for illustrating biocide blend.
Detailed description of the invention
The present invention relates to include one or more selected from MMDTC and DMDTC and its compositionss of the microbicide of salt.This A little salt can include monomethyl dithiocarbamate (MMDTC) ion and/or dimethyldithiocarbamate (DMDTC) any water soluble salt of ion, including but not limited to any alkali metal salt or alkali salt, such as lithium, sodium, potassium, Magnesium and calcium.Preferably sodium salt, potassium salt, and/or calcium salt.These salt can also be its any quaternary ammonium salt.The biocidal of the present invention Agent can be used in any environment for need control antibacterial.For example, in fluid (such as well volume increase stream for oil well and gas well Body) in.The microbicide of the present invention is used with the amount for effectively suppressing or controlling bacterial growth.The Biocide of the present invention Can be the single Biocide or various Biocides in compositionss, or can use with other biocide combinations.
MMDTC or its salt can be used alone or is applied in combination with DMDTC.DMDTC or its salt can be used alone or with MMDTC is applied in combination.The mixture of different salt can be used.Can use MMDTC and DMDTC (including in both any one Salt) any combinations.MMDTC can be combined with DMDTC.Microorganism is killed relative to many at present used in well stimulation fluid Agent, MMDTC, DMDTC and MMDTC+DMDTC seem more general and reduce the interference to the anti-friction agent in well fluids, reduce Interference to oxygen scavenger (such as sulfurous acid alkali oxygen scavenger), and at elevated temperatures relative to microbiocidal agent (such as glutaraldehyde) has minimum interaction with anti-friction agent.MMDTC and/or DMDTC (can for example make in any required form For emulsified fluid) it is added to fluid.
Any desired combination of MMDTC and DMDTC can be used.For example, they can be used alone, or as them Water soluble salt use, or be applied in combination in any desired ratio.For example, Biocide can be from 10 including weight ratio:90 To 100:0, or from 10:90 to 95:5, or from 80:20 to 20:80 or from 70:30 to 30:70 monomethyl dithiocarbamates first Sour sodium or monomethyl aminodithioformic acid potassium (MMDTC) are with SDD or Methyl disulfide for amino Potassium formate (DMDTC).Can also the use of ratio be 50:50 to 95:5；Or 60:40 to 90:10 or 65:35 to 80:20 or 75:25 To 95:5 or 60:40 to 80:20 (MMDTC) and (DMDTC).The combination of Biocide or Biocide can be deposited with following amount The amount causes to play synergism to the suppression of bacterial growth.
These Biocides can be included in fluid composition and for suppressing in drilling well, volume increase, production and/or rear life Bacterial growth in product, and/or it is included in any other stream related to the industrial process of desired control or bacteria growing inhibiting In body.The Biocide of the present invention can be used for those compositionss described in for example above-mentioned the application background parts.In a reality In applying example, fluid includes water；And polymer.Polymer could be for any polymer in well fluids.The example of polymer Including galactomannan polymer, the galactomannan polymer of derivatization, starch, xanthan gum, oxidized cellulose, hydroxyl alkane The copolymer of base cellulose, polyvinyl alcohol polymer, vinyl alcohol and vinyl acetate and the polymerization as polymeric reaction product Thing, the polymer includes one or more monomer being selected from the group, and the group is made up of the following：Vinyl pyrrolidone, 2- Acrylamide-2-methylpro panesulfonic acid, acrylic acid, methacrylic acid, styrene sulfonic acid, acrylamide and poly- for well treatment The other monomers of compound.
It has also been found that for suppressing in well fluids in the method for germ contamination, the method is included to well stimulation fluid The microbicide of the middle MMDTC or its salt for adding effective bacteriostatic amount, wherein selecting to combine DMDTC or its salt, is demonstrate,proved It is bright that synergism is served to MMDTC.
Well fluids preferably include at least one polymer.Preferred polymer classes include polysaccharide or synthetic polymer.Close Suitable polymer includes but is not limited to those described above polymer, and the gala of galactomannan polymer and derivatization is sweet Dew chitosan polymer；Starch；Xanthan gum；Oxidized cellulose；Hydroxy alkyl cellulose；Polyvinyl alcohol polymer be (such as vinyl alcohol The copolymer of homopolymer and vinyl alcohol and vinyl acetate)；And as polymer (such as homopolymerization of polymeric reaction product Thing, copolymer and terpolymer), the polymer includes one or more monomer being selected from the group, and the group is by the following group Into：Vinyl pyrrolidone, 2- acrylamide-2-methylpro panesulfonic acids, acrylic acid and acrylamide, methacrylic acid, benzene second Alkene sulfonic acid, acrylamide and the other monomers currently used for well treatment polymer etc..Some polyvinyl alcohol polymers can lead to Cross hydrolysed vinyl acetate ester polymer to prepare.Preferably, polymer is water miscible.The concrete reality of the polymer that can be used Polyacrylamide, guar gum, hydroxypropyl guar gum, carboxymethyl guar gum, the carboxy-methyl hydroxy propyl of example including but not limited to hydrolysis The copolymer of guar gum, hydroxyethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxypropyl cellulose, acrylic acid and acrylamide, Xanthan gum, starch and its mixture etc..
The amount of MMDTC and/or DMDTC and/or their salt in well fluids can change, and this generally depends on what is adopted Polymer, the condition of water and before the extent of growth of antibacterial, the time cycle of bacterial growth, by using the general of microbicide Environment etc..It is generally not possible to describe minimum, however, those skilled in the art be possible to determine minimum and without the need for mistake Degree experiment.Although there is no maximum, economy and/or environment reason are in order at, extremely excessively may be not desirable.
MMDTC, DMDTC, and/or MMDTC+DMDTC can be used in any form.For example, directly as emulsifying agent, solid Body or solution are added to in the fluid for preparing well stimulation fluid, in being added to the polymer solution of concentration, and/or can be with base It is prepared in fritter (slug) dosage.Present disclosure is not intended to be limited to the concrete grammar for manufacturing well stimulation fluid.
Claimed compositionss include being common in oil field and gas field stream to the example of its effective antibacterial and/or archeobacteria Those in body and water, including but not limited to aerobic and non-aerobic bacteria/archeobacteria, sulfate reducting bacteria/archeobacteria, product acid Antibacterial/archeobacteria, common heterotrophic bacteria/archeobacteria etc..Instantiation includes but is not limited to Rhodopseudomonass, Bacilluss Category, Enterobacter, Serratia species, fusobacterium etc..It should be noted that directed toward bacteria effect, it is contemplated that press phase in well fluids Same biocidal concentration will effectively suppress algae and fungi to be formed using MMDTC, DMDTC and/or MMDTC+DMDTC.
The drilling well of the present invention, production, volume increase, completion and/or treatment fluid and the present composition other compositionss can To further include one or more additive.Additive is generally included to strengthen the stability of fluid composition itself, so as to Prevent by exposure to oxygen, temperature change, trace metal, the composition of the water being added in fluid composition and cause point Solution, and to prevent the cross-linking reaction kinetic of non-optimal.For the component in fluid composition selection to a great extent It is upper to depend on them by the property of the hydrocarbon containing formation for using thereon.This kind of additive can include water, oil, salt (including organic Salt), it is cross-linking agent, polymer, other microbicide, corrosion inhibitor and lytic agent, pH adjusting agent (such as bronsted lowry acids and bases bronsted lowry), broken It is agent (breaker), metal-chelator, metal complex, antioxidant, wetting agent, surfactant, polymer stabilizer, viscous Soil stabilizer, scale preventative and scale remover, wax-proofing agent and Wax dissolving agent, asphaltic precipitation inhibitor, current inhibitor, oxygen scavenger, drop Fluid loss agents, chemical sizwe, diversion agent (diverter), solid sand chemicals, proppant, permeability modifiers, viscoelastic fluid, gas Body (such as nitrogen and carbon dioxide) and foaming agent.Additionally, the compositionss of the present invention can be without in these typical additives One or more (such as without alkali (such as hydroxide)).The present invention Biocide can separate with other chemicals and It is independently present, or including other additives as above.The Biocide of the present invention may include such as glutaraldehyde or four hydroxyls The Biocide of methylsulfuric acid phosphorus (THPS) or the bromo- 3- nitrilo-s propionic acid amide .s (DBNPA) of 2,2- bis- or other snap actions.
The Biocide of the present invention can be used with other biocide combinations, including successively or being used together.For example, may be used Using the Biocide of the quick killing of effective dose, subsequently to add another relatively slow effect according to controlled sequence of the present invention Biocide MMDTC and/or MMDTC and/or its salt.The example of the quick Biocide killed includes alkane dialdehyde, such as low Level alkane dialdehyde, such as C1-C8Alkane dialdehyde, such as malonaldehyde, butanedial, glutaraldehyde, hexandial.Preferred snap action is killed Biological agent includes DBNPA and pentane dialdehyde (glutaraldehyde).The quick Biocide killed, within several minutes, a few hours or a couple of days Can and then according to the Biocide of relatively slow effect of the present invention, for reducing or microbiostatic activity.Remove Outside this sequential grammar, the Biocide of the present invention can with other Biocides, for example with have been used to oil field and Any Biocide in gas field is mixed together and uses.
Although present disclosure concentrates on oil and natural gas industry, the Biocide of the present invention can be used for expecting control In system, any environment or industry for suppressing and/or killing antibacterial and/or archeobacteria.These Biocides can be during Any time or any position introduce, to efficiently control antibacterial and/or archeobacteria.For example, for well well stimulation, can be with By the fluid of the Biocide containing the present invention be directly injected in well so as to affect infiltrative substance reaction and/or by its Dissolving；Injection well is simultaneously injected to react and/or being dissolved with the fraction on stratum in stratum, to produce the flowing of replacement Path；And/or with the pressure injection well of effectively fracturing stratum and inject in stratum.
In certain embodiments, well fluids have with without microbicide compare well stimulation fluid it is essentially identical glue Degree.For example, the viscosity that fluid preferably has the fluid without Biocide is added or cuts 10%, or at it in 5%, or Its viscosity in 2%.
The fluid composition of the present invention can be injected in injection region, wherein the injection region is included a) containing a kind of or many Plant the material of the geology production of solid-state, liquid or gaseous hydrocarbon；B) hydrocarbon deposit；C) petroleum deposits；D) hydrocarbon or petroleum product Layer；E) hydrocarbonaceous or petroliferous product；F) including the hydrocarbon or oil of drilling well, hydraulic fracturing, production, volume increase and/or disposal site Exploitation place；G) hydrocarbon or petroleum transportation facility or storage facilities, including pipeline, mobile tanker loading facility, storage tank, and/or h) Refine facility, product, technique, equipment or its combination and the water related to the following and fluid：Drilling well；Volume increase；Production；Water Force and split；And/or dispose.
Injection region can include that (i) supplements water or fluid, (ii) recirculated water or fluid, (iii) recirculation water or fluid, (iv) Inject the drilling well of water or fluid, (v) output water or fluid or (vi) in oil field；Volume increase；Hydraulic fracturing；Production and/or disposal behaviour Other water for finding in work or adopting or fluid, present in an amount at least sufficient to reduction, inactivate, destroy or eliminate microorganism interested.
Except being applied to the gentle Tanaka in oil field, compositionss can be used for the environment and industry or system of desired control antibacterial In.
The present invention is illustrated by following non-limiting examples.
Example 1
In this example, relative to the control for not including Biocide, Biocide of the analysis with variable concentrations Viscosity after the reversion of polymer fluid.The Biocide analyzed includes glutaraldehyde (GA), sodium N methyl dithiocarbamate (SNMDTC), potassium dimethyldithiocarbamate (PDMDTC) and ratio are 80:The combination of 20 SNMDC and PDMDTC.System 0.1% water-compatible reactive stock solution of standby polyacrylamide (PAM) (molecular weight about 15M dalton), and make its aging about 30 points Clock.For the sample that each is tested, 200 milliliters of stock solution is taken, be added thereto to the Biocide of various concentration, and passed through Blender THE ADIABATIC SHEAR IN 5 seconds under minimum set, and and then surveyed by Brookfield viscometer (Brookfield viscometer) Amount mixture viscosity.These samples are considered as in 10 seconds mark balances (because only sending out afterwards within 10 seconds in the rotation of viscometer main shaft Raw minimum change), and record the value.Biocide is added with the concentration of 250,500,750 and 1,000 PPM (ppm), and High shear is carried out in blender (with minimum set) and continues 5 seconds, viscosity is recorded afterwards.
Test result is illustrated in FIG.As illustrated, it was observed that polymer viscosity changes with biocide density. Under low concentration (such as 250ppm), the viscosity of the combination of GA and SNMDTC and PDMDTC is slightly below only added extra aseptic The control of water.The viscosity of SNMDTC is slightly higher.However, at higher concentrations, the combination of SNMDTC and SNMDTC and PDMDTC Viscosity is slightly less than compareed and the sample containing GA.This be the discovery that it is important because the active component in GA (glutaraldehyde) is The Biocide being generally used in oil and gas industry, because it has no adverse effect to polymer such as polyacrylamide (PAM).Send out The combination of existing SNMDTC and SNMDTC and PDMDTC has about 2.75% viscosity lower than GA.It was observed that SNMDTC and PDMDTC Combination there is the MV minium viscosity of all Biocides tested.
The viscosity of reduction is not to be regarded as a problem, because if needing, can add other cross-linking agent and/or Polymer is compensating this reduction.It is important that viscosity does not increase, this may be (in hydraulic fracturing application) it is problematic, because To maintain higher viscosity, down hole may potentially hinder backflow.
Example 2
In this example, impact of the heat to the control of Biocide/polymer fluid and example 1 is analyzed.Surveyed The Biocide of examination includes：Glutaraldehyde (GA)；Sodium N methyl dithiocarbamate (SNMDTC)；Methyl disulfide is for amino first Sour potassium (PDMDTC)；The mixture of SNMDTC and PDMDTC and control.Some Biocides can have unfavorable shadow to polymer Ring so that they are more more viscous than desired, and this is undesirable in pressure break application because maintaining higher viscosity, it is lower to Jewel hole may potentially hinder backflow.For the sample of every kind of test, the Biocide of 1000ppm is added to into 200 grams of reality In the polyacrylamide stock solution of example 1.By these sample mix 5 seconds (in low setting but under high shear), and measure viscosity.So These samples are put in 140 °F of baking oven afterwards continue 24 hours, and allow to cool to room temperature (77 °F).
Once at these samples at room temperature, add deionized water so that volume returns to initial volume (due in baking oven Water evaporation when middle), and by these sample mix 5 seconds (in low setting but under high shear), and measure viscosity.As a result it is shown in Figure 2.
Observe that the polymer viscosity of all samples increases with increase of the time with heat from these results.However, every The viscosity of individual sample also changes with the Biocide type added.For each test, initial viscosity measurement only shows phase For sample (being designated " control ") impact of the Biocide to polymer viscosity without Biocide, and the second reading considers The impact of Biocide and heat to viscosity.
In view of these are seen in viscosity test previously as a result, it was observed that SNMDTC and PDMDTC combinations are actually led The small size reduction of viscosity compared with the control after initial and heating is caused, this can be expected.This reduction is not considered as It is a problem, because if needing, other cross-linking agent and/or other polymer can be added to compensate this reduction. It is important that viscosity does not increase, this may be problematic (in hydraulic fracturing application), because maintaining higher viscosity, under Backflow may be potentially hindered to jewel hole.
However, at 140 °F after lower 24 hours, the viscosity for compareing (blank) SNMDTC and SNMDTC/PDMDTC combinations is aobvious Show, relative viscosity difference is roughly the same, wherein straight chain SNMDTC has MV minium viscosity.After beat exposure, (blank) and GA are compareed Viscosity it is roughly the same.
Disclosed document shows, may crosslink between GA and acrylamide, therefore illustrates that it maintains viscosity higher Ability.However, again, the viscosity (in boundary shown in this article) of reduction is better than the viscosity higher of same order.
Example 3
In this example, have detected effect of four kinds of different Biocides to oxygen scavenger：1) N- methyl dithiocarbamates Sodium formate (SNMDTC) itself, and 2-3) combination with the potassium dimethyldithiocarbamate (PDMDTC) of two kinds of ratios, with And 4) 25% glutaraldehyde (GA) solution.To the beaker of the Ba Tefeierdeshi containing 500 milliliters (Butterfield) buffer solution Sodium sulfite (the Na of middle addition 200ppm dosage2SO3) as oxygen scavenger, and record pH and hydrogen reduction current potential (ORP).
Finally, the specific Biocide tested with the concentration addition of 500ppm.Just started with 10 minutes after record ORP. As a result it is shown in Figure 3.
From these results it is noted that when every kind of corresponding Biocide is added, there is significance difference in ORP reactions It is different.ORP is the instruction of the ability of solution oxide or another kind of solution/species of reduction.In theory, ORP is lower, the species being reduced It is higher with the ratio of oxidized species.The Biocide of all tests has the effect for improving to ORP, however, GA shows most The big ORP for improving.SNMDTC and SNMDTC/PDMDTC combinations show that acceptable ORP properties (compare after 10 minutes incessantly The low about 2X of control).
Example 4
In this example, respectively with 90:10 and 80:20 ratio and in 1000ppm and 10,000ppm (as product) Concentration under detect sodium N methyl dithiocarbamate (SNMDTC) and SNMDTC and potassium dimethyldithiocarbamate (PDMDTC) mixture is for acidogenic bactria and the biocidal efficacy of sulfate reducting bacteria.
From contaminated drilling well in DJ (Denver Zhu Er Regensburgs basin (Denver-Julesburg Basin)) stratum One gallon of sample of the taper water (cone water) of liquid (by hydrocyclone) is for these researchs.Taper water pH value is measured For 6.4, and oxidation-reduction potential is 34.6.Sample include anaerobism sulfate reducting bacteria, aerobic and anaerobic acid-production antibacterial and Common heterotrophic bacteria.Two kinds of organism types are all present in this sample, wherein SRB+H2The level of S surpasses in primary sample Cross 1012Individual bacteria/milliliters.
It is in order to ensure capturing field of activity, the water of pollution is slow with Ba Tefeierdeshi (Butterfield) phosphate Rush the concentration that solution is diluted to the 0.1% of its initial concentration.It is serially diluted with being designed for using 1cc asepsis injectors Iron nail inoculation 9.0mL anaerobism American Petroleum Institute (API) (API) nutritional solution of sulfate reducting bacteria (SRB).Additionally, using in 9mL Test acidogenic bactria (APB) and common heterotrophic bacteria (GHB) are serially diluted in phenol red (PR) nutritional solution.By medium salinity with it is logical The substrate salinity for crossing about the 0.5% of the measurement of total dissolved solidss (TDS) percentage ratio matches.In addition, including untreated control. Under all situations, on the basis of the w/w of PPM (milligrams per kilogram) concentration is determined.After Biocide is added, Each aliquot is continuously mixed (in thermal control incubator), and is maintained at 30 DEG C during studying.
Aliquot that is untreated and processing is checked after 7 days, to check whether blackening (represents that positive SRB gives birth to API bottles It is long), and check whether PRD bottles turn yellow (indicating the presence of APB) and/or turbidity (indicating the presence of GHB).Under highest dilution Color change represent presence organism to quantity.
As a result it is shown in table -1, wherein count being indicated with shown logarithm value.In the SNMDTC levels of 1000ppm Under, do not appear to any significant reduction occur in SRB or APB/GHB concentration.However, in the concentration of 10,000ppm SNMDTC Under, the bacterial concentration of SRB reduces two logarithm values within the time period of 8 days, and APB concentration reduces a logarithm value. However, it was observed that between N- methyl dithiocarbamates (SNMDTC) and potassium dimethyldithiocarbamate (SNMDTC) Cooperative effect.Under 1,000ppm 90:The SNMDTC of 10 ratios:PDMDTC makes drop more than the single SNMDTC of SRB concentration ratios A low logarithm, and with 80:20SNMDTC:The ratio of SNMDTC, reduces 3 the single SNMDTC of SRB concentration ratios more Logarithm.
In addition, under 1000ppm Biocides, single SNMDTC does not have any significant impact to APB or GHB, so And, for APB/GHB, with 90:The SNMDTC of 10 ratios:PDMDTC observes the reduction of two logarithms.
Under the Biocide of 10,000ppm, any obvious cooperative effect is overcome by the concentration of Biocide, and And the bacterial concentration of below per milliliter of 10 microorganisms.
Note：Test includes both APB and GHB organisms.
Example 5
The purpose of this example is to carry out phase with anti-friction agent and including the various Biocides of those anti-friction agents of the present invention Capacitive is tested.In the presence of the at most Biocide of 1000ppm, in flowloop test device under the load of 0.5gpt Evaluation is designated the anti-friction agent of " FR-516 "：BSN-85 (PDMDTC), BSN-1020A (SNMDTC, by Carbon bisulfide manufacture), BSN-1020B (SNMDTC Hi pH), BSN-1058 are (by 3,5- dimethyl tetrahydro -1,3,5,2H- thiadiazine -2- thioketone The SNMDTC that intermediate steps are prepared by Carbon bisulfide), dilution NaOH (pH=12) and tap water.By test sample with three times points The addition opened is added in friction loop, altogether to 1000ppm, to determine whether have to anti-friction agent under given dose level Any adverse effect.Flowloop analysis is passed through into 1/2 under 24 gallon per minute " pipe of diameter is 180,000 and 190,000 Between reynolds number range under carry out.Test is carried out in tap water.
Based on flowloop result, it was therefore concluded that, above-mentioned Biocide and sample it is compatible with anionic friction reducerses FR-516. FR-516 is fresh water, with suitable for the gentle saline FR without amps monomers.Product BSN-1020B and BSN-1058 show most The compatibility of high level, wherein the total losses in 13 minutes inner antifrictions is respectively 28.2% and 28.6%, and untreated control Show that the total losses for reducing is 28.4%.
In this project, flowloop with the operated in flow rate of 24gpm, Reynolds number 180,000 and 190, between 000. Baseline collection of illustrative plates is set up with the 0.5gpt FR-516 without Biocide.In this approach, FR-516 is being added to set up baseline Before pressure, flowloop is continued into 1 minute with 24gpm operations.At 1 minute, the FR-516 of 0.5gpt is added, and will be surveyed Other 12 minutes of trial operation.In the test including Biocide, the Biocide of 100ppm is added into baseline and pump is allowed Send lasting 1 minute.FR-516 was introduced at 1 minute.At 3 minutes, add the Biocide of extra 400ppm, and at 5 points Zhong Shi, adds the Biocide of extra 500ppm, adds up to the Biocide of 1000ppm.Test runs 13 minutes altogether.Make Test passes through 1/2 " OD pipes.
Difference is there is no in the sample that BSN-1020B and BSN-1058 is processed with control sample.BSN-85 is showed Go out the incompatibility of top, wherein the total losses for reducing is 30.2%, and BSN-1020A subtracted within 13 minutes test phases Few total losses is 29.5%.BSN-85 also shows the maximum loss of maximum reduction, and compared with untreated control, gained is most The big loss for reducing is 1%.Generally, based on test result, particularly when compared with untreated control, these loss quilts Think to pumping operation it is unessential.
FR-516 be firm fresh water to medium salinity water anionic friction reducerses, it can be in up to 40000mg/L TDS salt Run in water, this depends on the presence of bivalent cation and concentration in solution.In Broussard tap waters, 0.5gpt's Under load, without Biocide, the maximum that FR-516 is realized is reduced to 57.0%.The 100ppm in the baseline of flowloop test Biocide in the presence of, the maximum that reaches reduces all 56% or higher, and does not appear to any Biocide and prolong The reversion of anti-friction agent late.Maximum reduce maximum loss be in the presence of BSN-85, and through 13 minutes reduce maximum Loss is also in the presence of BSN-85.Total losses is the 30.2% of the total maximum reduction for reaching.Loss exceeds only control 1.8% and can be in the experimental error of test, and the high loss for totally reducing is most likely to be due to high-rate of shear Rather than by the indicated Biocide of the high level degraded for compareing.On the whole, BSN-1020B and BSN-1058 show most The compatibility of high level, wherein almost identical with the performance of control sample.With the sample of the NaOH and tap water admixture of dilution Obtain the result similar to control sample, this there is provided evidence to show high pH be probably the fast hydrolyzing of FR the reason for, and because This causes the antifriction for improving.Being summarized in following table -2 for the reduction for being obtained is provided.
Table -2
Example 6
According to the identical general test scheme with discussion in example -5, by being tested with FR-516,100ppm is added To baseline, added 400ppm at 3 minutes, and to add 500ppm at 5 minutes right to evaluate the combination of SNMDC and PDMDTC The impact of antifriction.
Specifically, mix 80%SNMDC (BSN-1058) and the combination of 20%PDMDTC (BSN-85) is accredited as with being formed The product of XP15-3055.The result of antifriction test is shown in following table -3.Figure -4 shows in graphical form data.
To this biocide blend it was concluded that compared with the control, the antifriction of all Biocides actually has Improved.The higher pH of these Biocides potentially contributes to the hydrolysis of antifriction polymer.
Table -3
With the antifriction of time Control BSN-85 XP15-3055 BSN-1058
Maximum is reduced 56.84 57.1 57.63 56.95
2 minutes are reduced 55.69 55.4 55.06 55.95
4 minutes are reduced 50.68 52.15 51.81 52.15
6 minutes are reduced 48.75 49.69 49.16 49.34
8 minutes are reduced 46.12 47.48 46.93 47.31
10 minutes are reduced 44.86 45.94 45.34 45.7
13 minutes are reduced 42.75 44.24 43.92 44.24
The total losses (%) of reduction 24.78888 22.52189 23.789693 22.3178227
The row of equivalent, concentration or other values or parameter as scope, preferred scope or preferred upper limit value and preferred lower limit value When table is given, this is interpreted as specifically disclosing by any pair of any upper range or preferred value and any lower range or excellent Choosing is worth all scopes to be formed, but regardless of whether these scopes are separately disclosed.When enumerating numerical range herein, unless It is otherwise noted, the scope is intended to include its end points and all integers and fraction in the scope.When the range of definition, It is not intended to limit the scope of the invention to described occurrence.
After considering description and the practice of the present invention disclosed here, the other embodiment of the present invention is for this area Those of ordinary skill for will be apparent.Wish that description and each example are simply taken as exemplary, and this Bright actual range and spirit is indicated by following claims and its equivalent.

Claims (20)

1. compositionss, including the microbicide of (a) effective microbe amount of suppression, the microbicide is selected from the group, the group by The following is constituted：(i) monomethyl dithiocarbamate (MMDTC), (ii) dimethyldithiocarbamate (DMDTC), the salt of (iii) MMDTC or DMDTC and (iv) its mixture and combination, and (b) polymer.
2. compositionss as claimed in claim 1, the wherein polymer be selected from the group in one or more, the group is by following Item composition：Galactomannan polymer, the galactomannan polymer of derivatization, starch, xanthan gum, oxidized cellulose, The copolymer of hydroxy alkyl cellulose, poly- glucosan, carboxyalkyl ether, polyvinyl alcohol polymer, vinyl alcohol and vinyl acetate and Used as the polymer of polymeric reaction product, the polymer includes one or more monomer being selected from the group, and the group is by the following Composition：Vinyl pyrrolidone, 2- acrylamide-2-methylpro panesulfonic acids, acrylic acid and acrylamide.
3. compositionss as claimed in claim 1 or 2, the wherein microbicide are with the presence of solid, emulsion or solution form.
4., such as compositionss in any one of the preceding claims wherein, wherein the microbicide includes sodium salt or potassium salt.
5., such as compositionss in any one of the preceding claims wherein, wherein the microbicide includes monomethyl dithiocarbamates Sodium formate.
6. compositionss as any one of claim 1-3, the wherein microbicide include monomethyl dithiocarbamates Potassium formate.
7. compositionss as any one of claim 1-3, the wherein microbicide include monomethyl dithiocarbamates The mixture of sodium formate and monomethyl aminodithioformic acid potassium.
8. compositionss as any one of claim 1-3, the wherein microbicide include monomethyl dithiocarbamates The mixture of sodium formate and potassium dimethyldithiocarbamate.
9. compositionss as any one of claim 1-3, the wherein microbicide include monomethyl dithiocarbamates The mixture of potassium formate and SDD.
10. compositionss as any one of claim 1-3, the wherein Biocide is from 10 including weight ratio:90 to 100:0 monomethyl nabam or single potassium potassium dimethyldithiocarbamate (MMDTC) and Methyl disulfide For carbamic acid sodium or potassium dimethyldithiocarbamate (DMDTC).
11. compositionss as any one of claim 1-3, the wherein Biocide are from 70 including weight ratio:30 to 30:70 monomethyl nabam or single potassium potassium dimethyldithiocarbamate (MMDTC) and Methyl disulfide For carbamic acid sodium or potassium dimethyldithiocarbamate (DMDTC).
12. compositionss according to any one of the preceding claims, the wherein microbicide with cooperative effective quantity exist with Bacteria growing inhibiting.
13. compositionss according to any one of the preceding claims, further include other Biocide, such as penta 2 Aldehyde, the other Biocide works rapider than the MMDTC and/or DMDTC.
14. compositionss according to any one of the preceding claims, wherein said composition further include one or more choosing From the additive of the following group, the group is made up of the following：Oil, salt, cross-linking agent, polymer in addition, corrosion inhibitor and dissolving It is agent, pH adjusting agent, metal-chelator, metal complex, antioxidant, wetting agent, polymer stabilizer, clay stabilizer, anti- Dirty agent and scale remover, wax-proofing agent and Wax dissolving agent, asphaltic precipitation inhibitor, current inhibitor, solid sand chemicals, proppant, ooze Saturating rate improving agent, viscoelastic fluid, gas, foaming agent and its mixture.
15. methods for suppressing germ contamination, including making compositionss contact with antibacterial to be suppressed, said composition includes A the microbicide of () effective microbe amount of suppression, the microbicide is selected from the group, the group is made up of the following：I () is single Methyl dithiocarbamate (MMDTC), (ii) dimethyldithiocarbamate (DMDTC), (iii) MMDTC or The salt of DMDTC and (iv) its mixture and combination.
16. methods according to claim 15, further include that said composition is injected in injection region, wherein the injection Area includes the material of geology production a) containing one or more solid-state, liquid or gaseous hydrocarbon；B) hydrocarbon deposit；C) oil sinks Product thing；D) hydrocarbon or petroleum product layer；E) hydrocarbonaceous or petroliferous product；F) include drilling well, hydraulic fracturing, production, volume increase and/or The hydrocarbon of disposal site or oil exploitation place；G) hydrocarbon or petroleum transportation facility or storage facilities, including pipeline, mobile tanker loading Facility, storage tank and/or h) refine facility, product, technique, equipment or its combination；And the water related to the following and fluid： Drilling well, volume increase, production, hydraulic fracturing and disposal.
17. methods according to claim 15, including monomethyl dithiocarbamate (MMDTC) or its salt is independent Ground is combined with dimethyldithiocarbamate (DMDTC) or its salt and is injected in injection region, and the injection region is included in oil The drilling well in field；Volume increase；Hydraulic fracturing；(i) for finding in production and/or disposal operations or adopting supplements water or fluid, (ii) are followed Ring water or fluid, (iii) recirculation water or fluid, (iv) injection water or fluid, (v) output water or fluid or (vi) other water or stream Body, presents in an amount at least sufficient to reduction, inactivates, destroys or eliminate microorganism interested.
18. methods according to claim 16, further including will be relatively fast compared with the MMDTC and/or DMDTC The Biocide of killing such as glutaraldehyde is injected in the injection region, is then injected into the compositionss.
19. compositionss, including effective Antimicrobial amount (a) monomethyl dithiocarbamate (MMDTC) or its salt and (b) dimethyldithiocarbamate (DMDTC) or its salt and (b) optionally polymer.
20. compositionss as claimed in claim 18, wherein (a) is from 80 with the weight ratio of (b):20 to 20:80, and (a) (b) synergism is controlling antibacterial.
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